I'm relatively new to Mac and I cannot for the life of me figure out why it is so complicated to download an OS installer, create a bootable disk and use it on another machine.
According to the official Apple documentation here, one must:
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.
I downloaded the 6 GB file. But when I run the installer, I get a message saying
This version of OS X 10.11 cannot be installed on this computer.
But I am not trying to install it on this computer! I want to install it on a different computer!
How do I just get the OS image so I can create the bootable drive to use in the other machine?
I really appreciate your advice!